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Upper
- Barrel Length: 18"
- Barrel Material: 416 R Stainless, Blasted Matte Grey
- Chamber: 17-556 KAK
- Twist Rate: 1:9
- Muzzle Device: KAK SAW Flash Hider
- Extension: M4
- Gas System: Rifle Length
- Gas Block: Low profile .750 Phosphate Finish
- Upper Receiver: Forged 7075 T6 Aluminum, Precision Machined to M16/M4 Spec
- Handguard: 13" MLOK, High Quality 6061 T6 Material MLOK with Proprietary Clamping System and Heavy-Duty Barrel Nut
- Charging Handle: MilSpec with Enhanced Large Billet Latch
BCG
- M16 Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection
- Bolt is machined from a single piece aircraft/bearing quality 9310 steel, heat treated properly, precision ground, Shot Peened and MPI’d
- Firing pin is machined to the mil-spec print from 8740, precision ground, and chrome plated
- One Piece Billet Fully Machined Enhanced Extractor, Phosphate coated for Increased reliability and corrosion resistance
- S7 tool steel ejector and extractor retaining pin
- 4130 Gas Key, precision staked using our hydraulic staking machine
- KAK Carrier Key Screws - T25 drive, Grade 8, Properly Heat Treated
All KAK complete upper receivers are test fired for feed and function using commercially loaded ammunition
Notice - 17-556 Was created by KAK Industry and is our proprietary chamber design. This chambering is NOT cross compatible with similar cartridges, do not attempt using other rounds in the 17-556 chamber.
We are producing KAK Industry 17-556 Custom chambered barrels for this cartridge currently.
Specifications
- Manufacturer:
- Kak Industry
- Category:
- upper-receiver
- Platforms:
- AR-15
- Interfaces:
- AR-15 barrel nut patternMagpul M-LOK
- Length:
- 18.0"
- Required Component:
- Yes
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